Solve the System by Substitution $$\begin{aligned}x - 3 y & = 6 \\x & = 4 y\end{aligned}$$

Multiple Choice

Solve the system by substitution.
- $$\begin{aligned}x - 3 y & = 6 \\x & = 4 y\end{aligned}$$

A) $\{ ( - 24 , - 6 ) \}$
B) $\left\{ \left( \frac { 3 } { 7 } , \frac { 6 } { 7 } \right) \right\}$
C) $\{ ( 6,24 ) \}$
D) $\{ ( 24,6 ) \}$